Ring-core-revolving machine.



J. R. GAMMETER.

RING CORE REVOLVING MACHINE.

APPLICATION FILED SEPT- B, 1914.

1,172,883. Patented Feb. 22, 1916.

- mm mum 8 21 17 Z2 Z0 JOHN R. GAMMETER, OF AKRON, OHIO, ASSIGNOR TO THEB. F. GOODRICH 013 NEW YORK, N. Y., A CORPORATION OF NEW YORK.

COMPANY,

RING-CORE-REVOLVING MACHINE.

Specification of Letters Patent.

Patented Feb. 22, 1916.

Application filed September 8, 1914. Serial No. 860,644.

such as scraping. brushing. etc., and its object isto avoid the time andlabor involved in mountlng such article on and demountingit from a chuckor similar gripping device. i

handling. of the heavy cast-1ron cores used in molding pneumatic tirecasings. which cores require to be scraped and brushed after each,molding operation to remove the accumulations of rubber. adheringthereto, and are thereafter usually treated with a thin coating ofrubber cement over portions of their surfaces to promote the adhesion ofthe innermost canvas ply of the tire carcass.

Of the accompanying drawings. Figure 1 represents a side elevation of acore-revolving machine constructed according to my invention, this viewindicating cores of two diiferent sizes in outline. Fig. 2 represents atop plan view. Fig. 3 represents an end View from the plane 33 ofFig. 1. Fig. 4: represents a horizontal section of the retaining latchand adiacent parts for the upper guide-roller. Fig. 5 represents anelevation of the brake and its related roller,

partly in section.

The frame of the machine comprises an upright 10 and a horizontal base11 pr0 vided with bearing standards for a pair of core-supporting rolls'12, 13. having V The roll 12 is" The invention especially applies tothe erally under a fixed pin 22 in order to hold the core-rest in itsraised position. From the link 19 depends a pivoted bolt 23 be-. tweenwhose head and the under side of the brake-lever 17 is interposed aspringQ l, so that when the treadle 20 is depressed in order to raisethe core-rest 18, the brakeshoe 1(' will be yieldingly applied to theroller 13. is an inclined run way 'or ramp leading from the floor 26 toa point adjacent to the topsideof the roller 13, whereby the cores mayreadily be elevated into operative position in the machine.

27 is an uppeigu'i'de-rolleif Having a V- shaped grooved periphery forgiving a third point of support to the cores, said roller being looselyjournaled on a pivoted arm 28 so as to be raised and lowered for coresof different diameters. Thev circles 29 and 29 in Fig. 1 indicate theoutlines of two cores of di'iierent sizes, and the positions of theupper roller 27 for these two sizes are shown in full and dotted linesrespectively. Said roll and its arm are counter-balanced by a weight 30attached to the outer end of arm 28 by a cord 31 running, over a pullev32. The arm may be fixed at any desii'ed height by means of a latch 33engaging the teeth of a ratchet bar 34e pivoted at ually retractedagainst the pressure of a spring 36 by means of a finger-lever 3'7.

The operation is as follows. The corerest 18 being held in its raisedposition by catching the trcadle 20 under pin 22, and

the top roll 27 being somewhat retracted from its operative position,the workman rolls a core up the inclined run-way 25 and over the frontroller 13 until it is supported by the core-rest 18. Treadle 20 is thenreleased frani its retaining pin and the rest 18 lowered until the coreis supported on the driving roller 12. This operation also releases thebrakeshoelfi, and at the same time the top roli 27 is lowered intooperative position in order to maintain the core upright while beingrevolved. The workman th'n performs the desired core-cleaning operationswith the use of scraping and brushing tools while the core is being;turned rapidly, and after it is cleaned he generally applies thin coatsof rubber cement to the side faces of the core at the places where thetop roller 27 is raised and the core is stopped tire beads are to beapplied, after which the by elevating it with the treadle 20 and thecore-rest 18, at the'same time applying the brake shoe 16 to the frontroller, whereupon the'core is rolled down the run-way and the operationthereby completed.

It is possible to apply the principle of .my invention in various waysand I therefore do not wish to be confined to the details ofconstruction herein set forth.

I claim:

1. In a machine of the character described, the combination of. a set ofrollers,

including. a driving roller, for supporting the ring core or similararticle byits periphery in a vertical position, .andmeans for raisingand lowering the core with respect to the lower rollers of said set.

2. In a machine ofthe character described, the combination "of a set ofrollers,

including a, driving roller, for supporting the ring core orsimilararticle by its periphcry in a vertical position, a core-rest forengaging the lower periphery of said core to raise and lower the samewith respect to the lower rollers of said set, and a treadle foroperating said rest. a

' 3. In a machine of the character deinclud-ing 'a driving roller, forsupporting the ring core or sim1la r a rticle by its periphery in avertical position, and an inclined run-way for guiding the core -to andfrom the level of the lower rollers of said' set.

4. In a machine of the character de-i' scribed, the combination of apair of lowergrooved rollers 'for supporting the lowera periphery of thecore or similar article, 'a' top support 'for maintaining said core in".

an upright position, and an inclined runway terminating at its upper endadiacent to the top side of '0ne of the lower rollers.

6. In a machine of the character described, the combination of a set ofrollers,

scribed, the combination of a pair of lowergrooved rollers fo supportingthe core or similar article, one of said rollers being a driver and theother loosely journaled, a core rest for raising and lowering the core,and a brake operating comomtly with said core-rest for stopping theloosely journaled roller-when the rest is elevated and releas-' ing itwhen said rest is depressed.

. 7.111 a mach'ne of the character de-.

scribed, the combination of a pair of lower rollers for supporting thecore or similar article in an upright position, one of said rollers bemga driver and the other loosely journaled, a core-rest mounted forvertical movement between said rollers, a treadle for operating saidrest, a brake for the loose roller operated bv said treadle, and, aninclined run-way terminating. at its upper end adjacent to the top sideofthe loose roller.

8. In a machine of the character described, the combination of a pair oflower grooved rollers, including a driving roller, an upper groovedroller, a. pivoted arm carrying said upper roller, a pivoted ratchetbar, and a latch on said arm engaging the teethfof said; ratchet barforholding the upper roller at different heights.

9. In .a machine of the character described the combination of a pair oflower grooved rollers, including .a driving roller,

an upperjgi'ooved roller, 'a pivoted arm supporting said'upper roller, acounter-weight for sa'idiarmand upperroller, and means for' fixing saidam in different angular posi-. I,

tions.- Y I lOl -In a machine of' the-character described, thecombination of a pair of lower grooved rollers, including a drivingroller,

means located between 'said rollers for raising and lowering the core orsimilar article,

an upper grooved .roller' adapted toberaised.

and lowered, and" means for fixing said upper roller at differentheights.

In testimony whereof I have hereunto set my hand in the-presence of twosubscribing witnesses, this 3 day-of September, 1914.

JOHN R. GAMMETER.

Witnesses: a

' WALTER K. Means,

ILLA N. KIRN.

' 7 Copies of this patent may be obtained for five cents each,byaddressing the-Commissioner of Ifatenti.

Washington, I). G. v

